Which of the following statements describes the difference between the Gastric Phase and the Intestinal Phase of gastric acid secretion?
Understand the Problem
The question is asking us to identify the key differences between the Gastric Phase and the Intestinal Phase of gastric acid secretion, highlighting aspects such as regulation, involvement of different hormones, and their roles in gastric acid production.
Answer
The gastric phase begins with food in the stomach, stimulating secretion; the intestinal phase starts when chyme enters the small intestine, controlling digestion and gastric emptying.
The gastric phase of gastric acid secretion is initiated by the arrival of food in the stomach, stimulating gastric activity. The intestinal phase begins when chyme enters the small intestine, regulating digestive secretions and controlling gastric emptying with both stimulatory and inhibitory effects.
Answer for screen readers
The gastric phase of gastric acid secretion is initiated by the arrival of food in the stomach, stimulating gastric activity. The intestinal phase begins when chyme enters the small intestine, regulating digestive secretions and controlling gastric emptying with both stimulatory and inhibitory effects.
More Information
The gastric phase mainly stimulates the secretion process, whereas the intestinal phase regulates secretion to optimize nutrient absorption and prevent overloading the intestine.
Tips
A common mistake is confusing the stimuli for each phase; the gastric phase is triggered in the stomach while the intestinal phase is triggered in the small intestine.
Sources
- The Stomach | Anatomy and Physiology II - Lumen Learning - courses.lumenlearning.com
- Stomach Secretion - an overview | ScienceDirect Topics - sciencedirect.com
- 12.4 Digestive System Regulation – Animal Physiology - opentext.uoregon.edu
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